Facebook has confirmed that is testing a new Collections feature. The company is currently testing “want,” “like,” and “collect” buttons. Victoria’s Secret, Pottery Barn, Michael Kors, Wayfair, Neiman Marcus, Fab.com and Smith Optics are among those testing the feature. Facebook wants to keep people on the site as opposed to leaving to visit Pinterest. The Collections feature could help Facebook generate more revenue, analyst Colin Sebastian told Reuters, “E-commerce is one of the best ways to monetize the Internet””]